Section 1D Flashcards
Where is Fungiform papillae most abundant?
At its tip and along its anterior sides
Behavioral evidence suggests that taste discriminations represent what 4 or 5 primary taste qualities
- Salty (sodium choloride NaCl)
- Sweet (Sucrose)
- Sour (Hydrochloric or Citric Acid)
- Bitter (Quinine hydrochloric acid)
- Umami (glutamate; MSG)
Fungiform papillae taste buds mainly respond to what tastes?
Sweet and Salty
Also Sour
Foliate papillae respond to what tastes?
Sour
Where are Foliate papillae found?
most abundant on middle edges of tongue
What papillae are the largest and least numerous?
Circumvallate
Circumvallate papillae respond to what tastes?
Bitter
Taste buds in the region of the epiglottis are innervated by what nerve?
Vagus Nerve (CN X)
Taste buds on circumvallate papillae and some of the foliate papillae are innervated by what nerve?
Glossopharyngeal nerve (CN IX) Basically the posterior 1/3 of the tongue
Taste buds in the region of the palate are supplied by what nerve?
Facial nerve (CN VII)
What cells are found in a taste bud?
Taste receptor Cells
Basal cells or Supporting cells
T or F, Taste receptor cells are technically neurons themselves.
False, They are technically NOT neurons. Taste receptor cells synapse onto afferent nerve endings of CN VII, IX and X
What CN’s do taste receptor cells synapse onto?
CN VII, IX, X
Cranial nerves (afferents) involved in gustatory pathway terminate where
Nucleus of the solitary tract or Solitary nucleus located in the brainstem. Specifically the rostral 1/2 of the NST contains the gustatory nuclei.
Output from the NST travels to what nucleus?
To the ventroposterior medial nucleus of the thalamus which is responsible for communicating with the insula
